Upgrading to the Enterprise edition is easy, simply request a price quote for your environment.
The most recent version of Right Click Tools is 4.6.
Every organization is different and it’s important to check with your organization’s software team to determine if you are authorized to run a free software product in your enterprise. The Community Edition lacks auditing, permissions management, and product support required in some organizations.
See the difference between the Community (free) Edition and Enterprise here.